![]() Nam lacinia pulvinar tortorsectetur adipiscing elit. Nam risus ante, dapibus a molestisectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Nam lacinia pulvsectetur adipisssectetur adipiscing elit. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. ![]() Pellentesque dapisectetur adipiscing elit. Pesectetur adipiscisectetur adipiscing elit. Pellentesque dapibussectetur adipiscing elit. Nam risus ante, dapibus a molestie consequat,sectetur adipiscing elit. Pellentesque dapibus efficitsectetur adipiscing elit. Nam risus ante, dapibus a molestie consequat, ultrices ac magsectetur adipiscing elit. Lorsectetur adipissectetur adipiscing elit. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Sectetur adipiscing ctetur adipiscing elit. Q9: How many HTTP GET request messages did your browser send?Ģ10: Was the connection persistent or non-persistent? How do you know?. So that only captured HTTP messages will be displayed. Stop Wireshark packet capture, and enter 'http' in the display-filter-specification window, (These are two different web servers insideĭ. The image of the cover for our 5th edition (one of our favorite covers) is stored at Our publisher's logo is retrieved from the gaia.cs. web The HTML instead the URLs for the images are contained in the downloaded HTML file.Īs discussed in the textbook, your browser will have to retrieve these logos from the That is, the images themselves are not contained in Your browser should display a short HTML file with two images. Start up your web browser, and make sure your browser's cache is cleared, asĮnter the following URL into your browser I.e., a file that includes other objects (in the example below, image files) that are stored on Here we look at what happens when your browser downloads a file with embedded objects, Second HTTP GET? Did the server explicitly return the contents of the file? Explain Q8: What is the HTTP status code and phrase returned from the server in response to this Q7: Now inspect the contents of the second HTTP GET request from your browser to the server.ĭo you see an 'IF-MODIFIED-SINCE:' line in the HTTP GET? If so, what information follows Did the server explicitly return the contents of Q6: Inspect the contents of the server response. See an 'IF-MODIFIED-SINCE' line in the HTTP GET? Q5: Inspect the contents of the first HTTP GET request from your browser to the server. That only captured HTTP messages will be displayed later in the packet-listing window. Stop Wireshark packet capture, and enter 'http' in the display-filter-specification window, so Quickly enter the same URL into your browser again (or simply select the refresh button on Your browser should display a very simple five-line HTML file Enter the following URL into your browser Start up your web browser, and make sure your browser's cache is cleared, as discussedĬ. Before performing the steps below, make sure your browser'sĪ. Recall that most web browsers perform object caching and thus perform a conditional GET The HTTP CONDITIONAL GET/response interaction. Q4: How many bytes of content are being returned to your browser?Ģ. Q3: When was the HTML file that you are retrieving last modified at the server? Q2: What is the status code returned from the server to your browser? Q1: Is your browser running HTTP version 1.0 or 1.1? What version of HTTP is the server Your browser should display the very simple, one-line HTML file. Wait a bit more than one minute and then begin Wireshark packet capture. To see the clutter of all captured packets).Ĭ. (We're only interested in the HTTP protocol here, and don't want Enter 'http' (just the letters, not the quotation marks) in the display-įilter-specification window, so that only captured HTTP messages will be displayed later in Start up the Wireshark packet sniffer, as described in the Introductory lab (but don't yetīegin packet capture). The Basic HTTP GET/response interaction.ī.
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